mime.types: included div, divx and ogm extensions - ranger - mirror of ranger

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author	hut <hut@lavabit.com>	2010-03-12 01:50:14 +0100
committer	hut <hut@lavabit.com>	2010-03-12 01:50:14 +0100
commit	cc813408772738fc124130095ba4a5c33c84dea3 (patch)
tree	dc8a54e01ac30f1858a2e570e1d9c6280647a766 /doc/pydoc/ranger.gui.html
parent	02cf8f611f9b7d836b141bb1b54f7116fa331e68 (diff)
download	ranger-cc813408772738fc124130095ba4a5c33c84dea3.tar.gz

mime.types: included div, divx and ogm extensions

Diffstat (limited to 'doc/pydoc/ranger.gui.html')

0 files changed, 0 insertions, 0 deletions

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd"> <html> <head> <meta http-equiv="content-type" content="text/html; charset=UTF-8"> <title>Mu - 036global_variables.cc</title> <meta name="Generator" content="Vim/8.1"> <meta name="plugin-version" content="vim8.1_v1"> <meta name="syntax" content="cpp"> <meta name="settings" content="number_lines,use_css,pre_wrap,no_foldcolumn,expand_tabs,line_ids,prevent_copy="> <meta name="colorscheme" content="minimal-light"> <style type="text/css">  </style> <script type='text/javascript'>  </script> </head> <body onload='JumpToLine();'> <a href='https://github.com/akkartik/mu/blob/master/036global_variables.cc'>https://github.com/akkartik/mu/blob/master/036global_variables.cc</a> <pre id='vimCodeElement'> 1 //: Global variables. 2 //: 3 //: Global variables are just labels in the data segment. 4 //: However, they can only be used in imm32 and not disp32 operands. And they 5 //: can't be used with jump and call instructions. 6 //: 7 //: This layer has much the same structure as rewriting labels. 8 9 :(code) 10 void <a href='036global_variables.cc.html#L10'>test_global_variable</a>() { 11 <a href='011run.cc.html#L83'>run</a>( 12 "== code 0x1\n" 13 "b9 x/imm32\n" 14 "== data 0x2000\n" 15 "x:\n" 16 " 00 00 00 00\n" 17 ); 18 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 19 "transform: global variable 'x' is at address 0x00002000\n" 20 ); 21 } 22 23 :(before "End Level-2 Transforms") 24 <a href='011run.cc.html#L252'>Transform</a>.push_back(<a href='036global_variables.cc.html#L26'>rewrite_global_variables</a>); 25 :(code) 26 void <a href='036global_variables.cc.html#L26'>rewrite_global_variables</a>(program& p) { 27 <a href='003trace.cc.html#L96'>trace</a>(3, "transform") << "-- rewrite global variables" << end(); 28 // Begin rewrite_global_variables 29 map<string, uint32_t> address; 30 compute_addresses_for_global_variables(p, address); 31 if (<a href='003trace.cc.html#L262'>trace_contains_errors</a>()) return; 32 <a href='036global_variables.cc.html#L73'>drop_global_variables</a>(p); 33 <a href='036global_variables.cc.html#L80'>replace_global_variables_with_addresses</a>(p, address); 34 } 35 36 void compute_addresses_for_global_variables(const program& p, map<string, uint32_t>& address) { 37 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(p.<a href='011run.cc.html#L107'>segments</a>); ++i) { 38 if (p.<a href='011run.cc.html#L107'>segments</a>.at(i).<a href='011run.cc.html#L112'>name</a> != "code") 39 compute_addresses_for_global_variables(p.<a href='011run.cc.html#L107'>segments</a>.at(i), address); 40 } 41 } 42 43 void compute_addresses_for_global_variables(const segment& s, map<string, uint32_t>& address) { 44 int current_address = s.start; 45 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(s.<a href='011run.cc.html#L114'>lines</a>); ++i) { 46 const line& inst = s.<a href='011run.cc.html#L114'>lines</a>.at(i); 47 for (int j = 0; j < <a href='001help.cc.html#L164'>SIZE</a>(inst.<a href='011run.cc.html#L123'>words</a>); ++j) { 48 const word& curr = inst.<a href='011run.cc.html#L123'>words</a>.at(j); 49 if (*curr.data.rbegin() != ':') { 50 current_address += size_of(curr); 51 } 52 else { 53 string variable = <a href='035labels.cc.html#L263'>drop_last</a>(curr.data); 54 // ensure variables look sufficiently different from raw hex 55 <a href='035labels.cc.html#L84'>check_valid_name</a>(variable); 56 if (<a href='003trace.cc.html#L262'>trace_contains_errors</a>()) return; 57 if (j > 0) 58 <a href='003trace.cc.html#L226'>raise</a> << "'" << to_string(inst) << "': global variable names can only be the first <a href='011run.cc.html#L128'>word</a> in a line.\n" << end(); 59 if (<a href='035labels.cc.html#L183'>Labels_file</a>.is_open()) 60 <a href='035labels.cc.html#L183'>Labels_file</a> << "0x" << <a href='010---vm.cc.html#L398'>HEXWORD</a> << current_address << ' ' << variable << '\n'; 61 if (<a href='001help.cc.html#L254'>contains_key</a>(address, variable)) { 62 <a href='003trace.cc.html#L226'>raise</a> << "duplicate global '" << variable << "'\n" << end(); 63 return; 64 } 65 <a href='001help.cc.html#L250'>put</a>(address, variable, current_address); 66 <a href='003trace.cc.html#L96'>trace</a>(99, "transform") << "global variable '" << variable << "' is at address 0x" << <a href='010---vm.cc.html#L398'>HEXWORD</a> << current_address << end(); 67 // no modifying current_address; global variable definitions won't be in the final binary 68 } 69 } 70 } 71 } 72 73 void <a href='036global_variables.cc.html#L73'>drop_global_variables</a>(program& p) { 74 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(p.<a href='011run.cc.html#L107'>segments</a>); ++i) { 75 if (p.<a href='011run.cc.html#L107'>segments</a>.at(i).<a href='011run.cc.html#L112'>name</a> != "code") 76 <a href='035labels.cc.html#L205'>drop_labels</a>(p.<a href='011run.cc.html#L107'>segments</a>.at(i)); 77 } 78 } 79 80 void <a href='036global_variables.cc.html#L80'>replace_global_variables_with_addresses</a>(program& p, const map<string, uint32_t>& address) { 81 if (p.<a href='011run.cc.html#L107'>segments</a>.empty()) return; 82 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(p.<a href='011run.cc.html#L107'>segments</a>); ++i) { 83 segment& curr = p.<a href='011run.cc.html#L107'>segments</a>.at(i); 84 if (curr.<a href='011run.cc.html#L112'>name</a> == "code") 85 <a href='036global_variables.cc.html#L91'>replace_global_variables_in_code_segment</a>(curr, address); 86 else 87 <a href='036global_variables.cc.html#L114'>replace_global_variables_in_data_segment</a>(curr, address); 88 } 89 } 90 91 void <a href='036global_variables.cc.html#L91'>replace_global_variables_in_code_segment</a>(segment& code, const map<string, uint32_t>& address) { 92 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(code.<a href='011run.cc.html#L114'>lines</a>); ++i) { 93 line& inst = code.<a href='011run.cc.html#L114'>lines</a>.at(i); 94 <a href='011run.cc.html#L122'>line</a> new_inst; 95 for (int j = 0; j < <a href='001help.cc.html#L164'>SIZE</a>(inst.<a href='011run.cc.html#L123'>words</a>); ++j) { 96 const word& curr = inst.<a href='011run.cc.html#L123'>words</a>.at(j); 97 if (!contains_key(address, curr.data)) { 98 if (!looks_like_hex_int(curr.data)) 99 <a href='003trace.cc.html#L226'>raise</a> << "missing reference to global '" << curr.data << "'\n" << end(); 100 new_inst.<a href='011run.cc.html#L123'>words</a>.push_back(curr); 101 continue; 102 } 103 if (!valid_use_of_global_variable(curr)) { 104 <a href='003trace.cc.html#L226'>raise</a> << "'" << to_string(inst) << "': can't refer to global variable '" << curr.data << "'\n" << end(); 105 return; 106 } 107 emit_hex_bytes(new_inst, get(address, curr.data), 4); 108 } 109 inst.<a href='011run.cc.html#L123'>words</a>.swap(new_inst.<a href='011run.cc.html#L123'>words</a>); 110 <a href='003trace.cc.html#L96'>trace</a>(99, "transform") << "instruction after transform: '" << data_to_string(inst) << "'" << end(); 111 } 112 } 113 114 void <a href='036global_variables.cc.html#L114'>replace_global_variables_in_data_segment</a>(segment& data, const map<string, uint32_t>& address) { 115 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(data.<a href='011run.cc.html#L114'>lines</a>); ++i) { 116 line& l = data.<a href='011run.cc.html#L114'>lines</a>.at(i); 117 <a href='011run.cc.html#L122'>line</a> new_l; 118 for (int j = 0; j < <a href='001help.cc.html#L164'>SIZE</a>(l.<a href='011run.cc.html#L123'>words</a>); ++j) { 119 const word& curr = l.<a href='011run.cc.html#L123'>words</a>.at(j); 120 if (!contains_key(address, curr.data)) { 121 if (<a href='030---operands.cc.html#L489'>looks_like_hex_int</a>(curr.data)) { 122 if (has_operand_metadata(curr, "imm32")) 123 emit_hex_bytes(new_l, curr, 4); 124 else if (has_operand_metadata(curr, "imm16")) 125 emit_hex_bytes(new_l, curr, 2); 126 else if (has_operand_metadata(curr, "imm8")) 127 emit_hex_bytes(new_l, curr, 1); 128 else if (has_operand_metadata(curr, "disp8")) 129 <a href='003trace.cc.html#L226'>raise</a> << "can't use /disp8 in a non-code segment\n" << end(); 130 else if (has_operand_metadata(curr, "disp16")) 131 <a href='003trace.cc.html#L226'>raise</a> << "can't use /disp16 in a non-code segment\n" << end(); 132 else if (has_operand_metadata(curr, "disp32")) 133 <a href='003trace.cc.html#L226'>raise</a> << "can't use /disp32 in a non-code segment\n" << end(); 134 else 135 new_l.<a href='011run.cc.html#L123'>words</a>.push_back(curr); 136 } 137 else { 138 <a href='003trace.cc.html#L226'>raise</a> << "missing reference to global '" << curr.data << "'\n" << end(); 139 new_l.<a href='011run.cc.html#L123'>words</a>.push_back(curr); 140 } 141 continue; 142 } 143 <a href='003trace.cc.html#L96'>trace</a>(99, "transform") << curr.data << " maps to " << <a href='010---vm.cc.html#L398'>HEXWORD</a> << get(address, curr.data) << end(); 144 emit_hex_bytes(new_l, get(address, curr.data), 4); 145 } 146 l.<a href='011run.cc.html#L123'>words</a>.swap(new_l.<a href='011run.cc.html#L123'>words</a>); 147 <a href='003trace.cc.html#L96'>trace</a>(99, "transform") << "after transform: '" << data_to_string(l) << "'" << end(); 148 } 149 } 150 151 bool <a href='036global_variables.cc.html#L151'>valid_use_of_global_variable</a>(const word& curr) { 152 if (has_operand_metadata(curr, "imm32")) return true; 153 // End Valid Uses Of Global Variable(curr) 154 return false; 155 } 156 157 //:: a more complex sanity check for how we use global variables 158 //: requires first saving some data early before we pack operands 159 160 :(after "Begin Level-2 Transforms") 161 <a href='011run.cc.html#L252'>Transform</a>.push_back(<a href='036global_variables.cc.html#L163'>correlate_disp32_with_mod</a>); 162 :(code) 163 void <a href='036global_variables.cc.html#L163'>correlate_disp32_with_mod</a>(program& p) { 164 if (p.<a href='011run.cc.html#L107'>segments</a>.empty()) return; 165 segment& code = *find(p, "code"); 166 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(code.<a href='011run.cc.html#L114'>lines</a>); ++i) { 167 line& inst = code.<a href='011run.cc.html#L114'>lines</a>.at(i); 168 for (int j = 0; j < <a href='001help.cc.html#L164'>SIZE</a>(inst.<a href='011run.cc.html#L123'>words</a>); ++j) { 169 word& curr = inst.<a href='011run.cc.html#L123'>words</a>.at(j); 170 if (has_operand_metadata(curr, "disp32") 171 && has_operand_metadata(inst, "mod")) 172 curr.metadata.push_back("has_mod"); 173 } 174 } 175 } 176 177 :(before "End Valid Uses Of Global Variable(curr)") 178 if (has_operand_metadata(curr, "disp32")) 179 return <a href='036global_variables.cc.html#L184'>has_metadata</a>(curr, "has_mod"); 180 // todo: more sophisticated check, to ensure we don't use global variable 181 // addresses as a real displacement added to other operands. 182 183 :(code) 184 bool <a href='036global_variables.cc.html#L184'>has_metadata</a>(const word& w, const string& m) { 185 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(w.metadata); ++i) 186 if (w.metadata.at(i) == m) return true; 187 return false; 188 } 189 190 void <a href='036global_variables.cc.html#L190'>test_global_variable_disallowed_in_jump</a>() { 191 Hide_errors = true; 192 <a href='011run.cc.html#L83'>run</a>( 193 "== code 0x1\n" 194 "eb/jump x/disp8\n" 195 "== data 0x2000\n" 196 "x:\n" 197 " 00 00 00 00\n" 198 ); 199 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 200 "error: 'eb/jump x/disp8': can't refer to global variable 'x'\n" 201 // sub-optimal error message; should be 202 //? "error: can't jump to data (variable 'x')\n" 203 ); 204 } 205 206 void <a href='036global_variables.cc.html#L206'>test_global_variable_disallowed_in_call</a>() { 207 Hide_errors = true; 208 <a href='011run.cc.html#L83'>run</a>( 209 "== code 0x1\n" 210 "e8/call x/disp32\n" 211 "== data 0x2000\n" 212 "x:\n" 213 " 00 00 00 00\n" 214 ); 215 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 216 "error: 'e8/call x/disp32': can't refer to global variable 'x'\n" 217 // sub-optimal error message; should be 218 //? "error: can't call to the data segment ('x')\n" 219 ); 220 } 221 222 void <a href='036global_variables.cc.html#L222'>test_global_variable_in_data_segment</a>() { 223 <a href='011run.cc.html#L83'>run</a>( 224 "== code 0x1\n" 225 "b9 x/imm32\n" 226 "== data 0x2000\n" 227 "x:\n" 228 " y/imm32\n" 229 "y:\n" 230 " 00 00 00 00\n" 231 ); 232 // check that we loaded 'x' with the address of 'y' 233 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 234 "load: 0x00002000 -> 04\n" 235 "load: 0x00002001 -> 20\n" 236 "load: 0x00002002 -> 00\n" 237 "load: 0x00002003 -> 00\n" 238 ); 239 <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a>("error", 0); 240 } 241 242 void <a href='036global_variables.cc.html#L242'>test_raw_number_with_imm32_in_data_segment</a>() { 243 <a href='011run.cc.html#L83'>run</a>( 244 "== code 0x1\n" 245 "b9 x/imm32\n" 246 "== data 0x2000\n" 247 "x:\n" 248 " 1/imm32\n" 249 ); 250 // check that we loaded 'x' with the address of 1 251 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 252 "load: 0x00002000 -> 01\n" 253 "load: 0x00002001 -> 00\n" 254 "load: 0x00002002 -> 00\n" 255 "load: 0x00002003 -> 00\n" 256 ); 257 <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a>("error", 0); 258 } 259 260 void <a href='036global_variables.cc.html#L260'>test_duplicate_global_variable</a>() { 261 Hide_errors = true; 262 <a href='011run.cc.html#L83'>run</a>( 263 "== code 0x1\n" 264 "40/increment-EAX\n" 265 "== data 0x2000\n" 266 "x:\n" 267 "x:\n" 268 " 00\n" 269 ); 270 <a href='003trace.cc.html#L290'>CHECK_TRACE_CONTENTS</a>( 271 "error: duplicate global 'x'\n" 272 ); 273 } 274 275 void <a href='036global_variables.cc.html#L275'>test_global_variable_disp32_with_modrm</a>() { 276 <a href='011run.cc.html#L83'>run</a>( 277 "== code 0x1\n" 278 "8b/copy 0/mod/indirect 5/rm32/.disp32 2/r32/EDX x/disp32\n" 279 "== data 0x2000\n" 280 "x:\n" 281 " 00 00 00 00\n" 282 ); 283 <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a>("error", 0); 284 } 285 286 void <a href='036global_variables.cc.html#L286'>test_global_variable_disp32_with_call</a>() { 287 transform( 288 "== code 0x1\n" 289 "foo:\n" 290 " e8/call bar/disp32\n" 291 "bar:\n" 292 ); 293 <a href='003trace.cc.html#L294'>CHECK_TRACE_COUNT</a>("error", 0); 294 } 295 296 string <a href='036global_variables.cc.html#L296'>to_full_string</a>(const line& in) { 297 ostringstream out; 298 for (int i = 0; i < <a href='001help.cc.html#L164'>SIZE</a>(in.<a href='011run.cc.html#L123'>words</a>); ++i) { 299 if (i > 0) out << ' '; 300 out << in.<a href='011run.cc.html#L123'>words</a>.at(i).data; 301 for (int j = 0; j < <a href='001help.cc.html#L164'>SIZE</a>(in.<a href='011run.cc.html#L123'>words</a>.at(i).metadata); ++j) 302 out << '/' << in.<a href='011run.cc.html#L123'>words</a>.at(i).metadata.at(j); 303 } 304 return out.str(); 305 } </pre> </body> </html>


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